[Hypotension and hydration during spinal anesthesia for caesarean section].

Spinal anesthesia is the technique of choice for elective cesarean section. It is easily achievable, fast and reliable technique. Maternal hypotension is a complication of spinal anesthesia, which is associated with adverse effects on both the mother and the fetus. Thus, the aim of the anesthesiologists should be to treat maternal hypotension quickly and efficaciously, or better yet, to actively prevent it. In current practice the application of vasopressors to maintain arteriolar tone is the most widely used strategy for the prevention of hypotension induced by spinal anesthesia. Other methods such as left tilt of the operating table, decreasing aortocaval compression and hydration are also routinely applied. Possible four different methods of intravascular hydration: (1) crystalloid preloading, (2) colloid preloading, (3) crystalloid co loading, and (4) colloid co loading.